有限元法

Firstly, the paper introduced the working principle and device of the two-pass grate-rotary kiln and had an analysis method of mechanics of the tyre. We have put forward the finite element analysis of the contact stress of the tyre-roller based on the whole construction mode of shell-kiln liner-large gear-tyre-roller of the rotary kiln and obtained the strength and distributing rule of the tyre's contact stress. The research shows that within one week the contact stress mainly lies in two leading peak value and catastrophe which appear at the contact zone of the tyre and supporting roller. Then we regarded the tyre's stress as the test of unknown plane stress of principal stress. Utilizing mature and modern testing technology, we raised the testing principle and scheme of tyre stress and then had a on-the-spot test of the stress. Comparing the analysis result of the test with the one calculated from the finite element analysis, it proofed the rationality of finite element analysis method of integral modeling and the correctness of the contact stress result of the tyre and roller. Finally, for two-pass of similar rotary kilns, using the ANSYS APDL re-development technology, carried on the re-development about the overall finite element analytic method of thecontact stress of tyre-roller.

首先，本文介绍了2档回转窑的工作原理和装置，对滚圈的力学行为进行了分析，提出了基于筒体-滚圈-托轮的回转窑整体建模的有限元分析法，来对滚圈-托轮的接触应力进行有限元分析与计算，得到了滚圈接触应力的大小和分布规律，并求得滚圈外中内圈节点的主应力；其次，把滚圈的受力看成是主应力未知的平面应力的测试，利用现代测试技术，提出了滚圈主应力测试的原理和方案，并对滚圈的主应力进行了现场测试，现场测试分析结果与有限元分析计算出的主应力相比较，证明了整体法建模的有限元分析方法的合理性和滚圈-托轮接触应力结果的正确性；最后，利用ANSYS的APDL的二次开发技术，针对2档同类回转窑，就滚圈-托轮接触应力的整体有限元分析法进行了二次开发。

The deficiencies of traditional FEMin solving geotechnical engineering problems and the anisotropies of rock-like materials are expounded.

分析了传统有限元法在解决岩土工程问题时的不足之处，详细阐述了岩土类材料的非匀质性特性。

Considing the complication of crenellated radial labyrinth geometry, a Taylor-Galerkin finite element scheme is developed to solve the multi-dimensional unsteady viscous convection-diffusion equation.

针对锯齿型迷宫密封几何形状的复杂性，发展了求解多维粘性非定常对流扩散方程的Taylor—Galerkin有限元法。

The magnetic circuit was designed by finite element method, and the precision of magnetic circuit was improved.

作者采用有限元法对力矩器的磁路设计进行了深入的研究，提高了磁路设计和分析的精确程度。

In this paper, the finite element method and the rotationally periodic analytical method are jointly employed to study the dynamics of fluid-structure coupling systems, the relevant analytical methods and program implement are provided.

本文采用有限元法结合旋转周期分析方法对流固耦合系统的动力性能进行了系统研究，给出了有关的分析方法和程序实现。

In this case, the best efficiency of the inspection is not reached. Therefore this article develops a new method for finding optimum exciting frequency of eddy current testing by numerical modeling based on modern eddy current testing theory and technology.

为此本文在现代涡流检测理论和技术的基础上，提出了用电磁场有限元法选择金属管材涡流检测的激励频率，用这种新方法克服现有管材涡流检测参数选择方法的缺点。

So we can analyse the force for the connecting rod accurately on the whole to meet the need.

有限元法给连杆的结构分析提供了一种可靠的理论计算方法。

Power transformers electric impedance ampere-turn distribution FEM

变压器；安匝分配；阻抗电压；有限元法

In this paper, finite element analysis of EM AE is presented.

本文建立了电磁声发射的数学模型，并用有限元法进行计算，说明了其产生机理。

The Finite Element Method (third, fourth and fifth edition),O.C.

有限元法基本原理和数值方法，王勖成，清华大学出版社，2003。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。